Reformed, am I understanding you correctly then to say that Paul's teaching in Romans 8 regarding man's inability to fulfill the law themselves is equal to their inability to trust in someone else who fulfilled the law for them?
Equal? More of a cause and effect. The unsaved man (v. 5a, 6a) has his mind set on the flesh -- the things of the world. That man's fleshly or natural mind (c.f. 1 Cor. 2:14) is both hostile toward God and not subject (or in submission) to the law of God. In fact it is not able to submit to God.
I believe you and I would agree that Jesus Christ kept the Law perfectly. He kept its moral, ceremonial, and judicial aspects. For those who come to faith in Christ, they share in the perfect Law-keeping of the Son of God. So, for me, (and most Reformed theologians) man's fallen condition makes trusting in Christ, apart from divine regeneration, impossible. That is what the "not even able to do so" is referring to in verse 7. It is not referring to keeping the Mosaic Law.
Skandelon said:And you base this upon an interpretation of the word 'law' which would not be the Mosaic Law, but the 'command to believe.'
Is that accurate?
Your statement does adequately reflect my position. It is not just the word "law", but how the word "law" νόμος (nomos) is used. It is used to refer to two separate things. In verses 3 and 4 it refers to the Mosaic Law. In verses 2 and 7 it refers to the Gospel and judgment.
So, back to the question I asked you in my previous post. Is it your contention that νόμος (nomos=law) in Romans 8:7 is referring to the Mosaic Law, i.e. the Law?